Blank page please help

Hi i just insalled bbpress to test it but i cant figure out whats wrong i just get a blank page

This is what ive dona so far: I installed the plugin–> created a forum–> created a page which i named forum–> entered the shortcode [bbp-forum-index]–> When i go to the front i see the page click it and up comes the forum i created when i then click the forum and i get the blank page…–> in the adressfield it says http://www.kanin.se/forums/forum/theforumicreated and the page i blank.

I have the latest wordpress and bbpress

feeling stupid for not seeing the possibly easy solution.

I have searched this forum and the webb even watched a 30 min video on the setup of bbpress didnt get any smarter.